Improvement in feeding paper to printing-presses



c. H. s'ronnAnn & E. u. NORTON. Feeding Paper to Printing-Presses.

N0, 140,962, Patentedluly15,l873.

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AM. PHOTO-LITHOGIMPH/C 00 NY mom's Preocsss) UNITED STATES PATENTOEEIoE.

CLARENCE H. STODDARD AND EDWARD NORTON, OFITHACA, NEW YORK.

IMPROVEMENT IN FEEDING PAPER TO PRlNTlNG-PRESSES.

Specification forming part of Letters Patent No. 140,962, dated July 15,1873 application filed February 24, 1873.

To all whogn'it may concern:

Be it known that we, CLARENCE H. SToD- DAED and EDWARD D. NORTON, bothof Ithaea, Tompkins county, State of New York, have invented certainImprovements in Devices for Feeding Paper to Printing-Presses, of whichthe following is a specification:

Our invention consists ina particular arrangement of pivotedguiding-fingers with the feedboard of a cylinder-press, whereby a smoothand regular feed of the sheet is accomplished, as will be hereinaftermore fully pointed out.

Figure 1 is an end view of a cylinder, on which the paper is printed,with our attachment. Fig. 2 is a side view, showing more clearly ourplacing-fingers. Fig. 3 is an end view opposite to Fig. 1, and showingour method of moving the gripers.

In Fig. 1, a is the impression-cylinder, on which the paper is printed,and b is the opening in the cylinder through which the gripers 0 riseand grasp the paper as it is fed to the cylinder. As ordinarily done itis subject to accidents, especially at the corners of the sheets, thuscausing foldings and other errors. To correct this we suspend a shaft,d, over the place where the sheet is grasped. This shaft has an arm, 0,which is moved by the pin f fast to the cylinder, and to this shaft weattach, by their set-screws, the fingers h, as many as are necessary, sothat the gripers grasp the sheets more accurately than without them. Thepin, stop, or cam f may be fast to other parts of the press, but isarranged to move the fingers down on the cylinder just before and whilethe gripers rise out of the cylinder and grasp the paper. The gripers care upon a shaft, t, within the cylinder, whose endsz' are seen in Figs.1 and 3, and this shaft we move by the pin j on the arm m, Fig. 3,attached, just outside of the cylinder, to the end of the shaft i. Thesliding of the pin up the incline n, Fig. 3, causes the gripers 0 torise out of the cylinder and grasp the paper, and the pin 19 in theframe loosens the gripers and puts the arm min place for the next sheet.As represented, this arrangement of the arm will not allow the cylinderto be reversed, but a slight modification of the end of the arm m willallow the cylinder to be reversed. In Fig. 1, the spring sis seenbearing on the arm 0 for retracting the fingers h after passing the pinf, and also the spring tfor holding the gripers either as grasping or asrelaxed by the cam U. The paper-platform w is represented, but most ofthe parts of the .press are omitted.

The principle of the action of the gripers is well known, and the actionof the fingers It will also be apparent from our description.

The further advantages and uses of our in vention are apparent to thoseskilled in the art to which it appertains.

We are aware that weights have been used to press upon the sheet ofpaper to insure its remaining smooth, while and after the gripers seizeit also that a pivoted arm has been used for the same purpose; we donot, therefore, broadly claim weights or fingers, under which the paperis to drag, to insure its remaining smooth while and after the gripersseize it; but-- What we do claim is- In combination with animpression-cylinder, (1, having gripers c, the guiding-fingers h onapivoted bar, d, having a pendulous lever, e, which is intermit-tinglyvibrated by a stop, f, on the cylinder.

CLARENCE H. STODDARD. EDWARD D. NORTON.

Witnesses:

SAMUEL J. PARKER, A. BURRITT.

